Archive for February, 2018

Reverse Osmosis-Some Insights

Posted on 08 February 2018 (0)

If you are wondering what is reverse osmosis and what does reverse osmosis do, then you have found the right article to address your questions. Most often you come across the terms reverse osmosis when trying to find out information on water purification systems for your home and while trying to figure out which one is best for you. When deciding on a water treatment it is best to first understand what is reverse osmosis and what does reverse osmosis do so that you can decide if this expensive treatment step is the right choice to have included in your home water treatment unit. Water treatment systems are important to have in your home because nowadays there are over 8000 chemicals that are in the earth’s atmosphere that can find their ways into your water contaminating it that you may not even aware you are ingesting. Additionally, due to people’s highly increased use of pharmaceuticals, often times, you may be ingesting other people’s residue of prescription drugs because city’s mass water purification systems are not equipped to effectively cleanse the water of these residues. Thus, you should have your own purification system at home so that you know you family is protected from the harmful effects of placing these hazardous toxins and drugs into their systems through drinking water.

What is reverse osmosis and what does reverse osmosis do? A common step in many purification systems is reverse osmosis. This is the point where you are probably wondering what is reverse osmosis and what does reverse osmosis do? Reverse osmosis is a step in a water treatment system that uses a filter to trap harmful particles such as rust and other harmful elements instead of letting these elements continue on into your drinking water stream. What happens is a high pressure gage is used to push the clear water free of harmful solute that is trapped by the filter. Thus the water cleaned of elements continues on into your glass, and the harmful hazardous materials and chemicals remain trapped on the other side of the filter. The reason it is called reverse osmosis is because in the process of osmosis generally the goal is to keep the solutes and dispel the watery solution that holds them. What you actually want from your water purification system is the cleaned water and not the solvent.

The filters can get rather expensive if you have to keep replacing them. Also, reverse osmosis does not identify between healthy minerals and toxic chemicals, therefore, when you strip your water you are also stripping it off all the health benefits you receive from drinking water. Due to that, you should seriously consider what is reverse osmosis and what does reverse osmosis do and then move on to considering rather or not you want to utilize reverse osmosis before installing it in your home.

A Guide To Reverse Osmosis

Posted on 08 February 2018 (0)

The tap water that comes out of your faucet is perfect. Get a filter or be a filter. Which of these two sentences are more true? Both are partially true. In many places, tap water does not taste good. In other places, tap water has tiny amounts of substances you would not want to drink – and over a lifetime might have an affect on you. There are many kinds of potential problems in tap water. Even if your city provides good water, it has to travel a long way through old pipes on the way to your house. I use a whole-house ten micron sediment filter to filter all water going into my house. I change the filters every five months, and they are filthy and red-colored, because of the rust and dirt in the water. When you use a whole-house filter, shower heads and faucet screens don’t clog. Whole-house filters are separate from drinking water filters.

All reverse osmosis water systems require both sediment and carbon pre-filters. All filters need to be changed. Plan on changing sediment and carbon filters every six months or sooner, and reverse osmosis membranes every 2-3 years. It’s best to buy a dissolved solids meter, and test your water every month to make sure the system is working right. Pure water will measure zero parts per million of dissolved solids. Tap water will usually measure at least 200 parts per million. Don’t get a liquid chemical test set, get a $25-$50 portable battery-operated tester with a LCD readout. These cheap meters only show the total dissolved solids in water – they do not tell you what is in the water. Water filter systems and replacement filters are available on eBay and Amazon, and many other places – even retail stores.

The hardest parts of installing water filters are connecting to the supply side of the water into your house, connecting to a drain line for the waste water, and installing a clean water faucet onto your sink. The rest of a water filter installation is easy. You may need a plumber, or to buy a system where they will install it for you. The best systems have clear plastic casings, so you can see how dirty the filters get. The best systems also use standard-sized replacement filters, so you don’t have to buy tiny, expensive, and proprietary filters. Reverse osmosis water filters require both a sediment and a carbon filter in front of them, to screen out the dirt and most of the junk, before the water enters the reverse osmosis filter. A sediment filter blocks particles larger than five or ten microns. That’s an improvement over tap water, but it does not help the taste, or filter out tiny or dissolved nasty stuff in the water. The next step is a carbon block filter.

Almost all carbon block filters are activated. Activation is a process where high pressure steam is passed through coal to purify it so that it becomes almost pure carbon. Carbon is the fourth most common element in the universe, and is needed for life. Carbon makes an excellent filter, especially when extruded into a solid block. Activated carbon block filters strain water to trap much more particles than a sediment filter can. Activated carbon filters have a positive charge to attract chemicals and impurities. As the water passes through the positively-charged carbon, the negatively-charged contaminants are attracted and bound to the carbon. Activated carbon block filters strain out sediment, dirt, bacteria, algae, chlorine, some pesticides, asbestos, and much more. They filter sub-micron size particles, making quality water that tastes good. The water passing through activated carbon blocks still has some particles, chlorine, nitrates, fluoride, and other dissolved junk. The next step for the best quality water is a reverse osmosis filter.

Reverse osmosis filters force water through 0.0001 micron-wide holes, through semi-permeable membranes. Long sheets of membranes are sandwiched together and rolled up around a hollow central tube in a spiral. The reverse osmosis filter removes 99% of the remaining junk in the water. It takes almost everything out, even the calcium and magnesium in the water. Most often a small carbon filter is used after the reverse osmosis filter, to improve the taste and catch a bit more of that 1% of junk the reverse osmosis filter lets go though.

Even after sediment, carbon block, and reverse osmosis filters, water is still not perfect. Chloramines and metal ions, while reduced, may still be in the water. For this reason, some systems include a final deionizing (DI) filter. DI filters are usually cartridges filled with plastic-like resin crystals that grab the remaining ions in the water. After the DI filter, the water is very pure. Reverse osmosis water filters generate waste water, and they produce only a few drops of clean water per minute. For this reason, most reverse osmosis systems have a storage tank to accumulate water. All reverse osmosis systems have a drain line for waste water, that is “wasted”. The waste water can be used for plants, dumped down the drain, etc.

Ultra-pure water can grow algae very easily. When you take chlorine and other nasty stuff out of water, tiny microbes and sunlight can combine to make a perfect environment to grow harmless algae. The quality of water filtered this way is cleaner than even distilled water. Some people think pure water tastes flat. Some people add a tiny amount of sea salt to pure water. For me, no salt is needed, pure water tastes like water should. The Internet has baseless scare stories about how ultra pure water is dangerous. Hogwash. If you inject pure water, it may hurt you. Drinking pure water does not hurt anyone unless they are fasting. The instant that pure water hits your mouth it’s no longer pure. Nothing is better for making coffee, cooking, and ice cubes, than using pure water.

Reverse Osmosis-Fundamentals Explained

Posted on 08 February 2018 (0)

When it comes to water purification, one of the most frequently asked questions is how does reverse osmosis work. For the home, you can choose an under the sink system just for the kitchen or you can choose a whole house reverse osmosis system. But, before you buy one, there are some things that you should consider. First, let’s answer the question how does reverse osmosis work. Simply put, water is forced through a membrane in order to filter out contaminants. Reverse osmosis is commonly used in large water treatment facilities. It works well to filter out large particles, like garbage and other pollutants that end in the water supply, but it is not possible to remove all chemical contaminants by this method. Reverse osmosis does not remove bacteria or microbes, which is why chlorine is added; to kill some of the germs and bacteria.

In some of the better public water supplies, additional systems, like activated carbon filters are used to trap some of the organic chemicals. UV lamps may be used to further disinfect the water. In other words, the real answer to how does reverse osmosis work to purify water is “not very well”, if you are concerned about chemical contaminants. Depending on where you live, your tap water has probably already undergone reverse osmosis to some extent. Adding whole house reverse osmosis will do nothing to improve the taste, smell or appearance of the water that comes from your tap.

Reverse osmosis alone is not enough to insure that the water in your home is safe for drinking. If you put a reverse osmosis filter in your fish tank, your fish would become ill and probably die. If you have fish, you know that carbon filtration systems are needed to protect them. So, why would you drink water that your fish cannot live in? The EPA allows levels of chlorine in tap water that exceed the maximum safe levels for swimming pools. Chlorine and other chemicals in tap water are believed to increase the risk of cancer and have been linked to a variety of other health conditions. Whole house reverse osmosis does nothing to remove those chemicals.

If you are wondering how does reverse osmosis work, you are probably interested in safer, better tasting drinking water. Whole house reverse osmosis will not provide that. A better choice is a combination purification process, available from only a few companies. The best purification processes combine carbon filtration, ion exchange and sub-micron filtration. Carbon filtration removes odors and improves taste, as well as things you cannot see or smell. Ion exchange softens the water by replacing some minerals with others and balancing the trace mineral content. Sub-micron filtration is something like whole house reverse osmosis systems, except that microscopic contaminants are removed from the water.

If you have your own water purification system, you replace the filters regularly. Your local water treatment facility simply adds more chemicals to keep the filters clean and prevent them from rotting. They are not routinely replaced. A home water purification system is a great idea, but whole house reverse osmosis alone is not really the best choice. Hopefully, we’ve answered your questions about how does reverse osmosis work and given you something to think about.